William e



)To all t may concern i i Be it known" that I,` WILLIAMTE. AnNoLD,

`of Rochester,` in the county of Monroe and State `of `New York, have invented certain `new and usefulglrnprovementin Sash-Locks,

A h `of which thefollowingyils Iaffull and exact `3 description,4 "reference j being had to the Sacf cmlpariyngdrawinga making part* of this specification; "and totheietters of reference s l marked thereon,` the` saine letters referring to "like parts in allythe drawings, `and of said "3 show thefslide which moves v"the bolt in plan `andhcross sections"` Fig.; 4 shows the form of the bolt." Figs and 7 exhibit the fdi'l'erentfmodesof arrangingrthe bolt and slideso` as `to answerfforfeither a rightor l lefthadlocks "Figsdtand are intended toexplain that feature *of this `combination which renders it difficult or impossible to opi-hi i l `werfate theboltfwhen'fully ejected, `bywsirnply pressing upon the projecting end B Fig. '1.

. The" nature of my invention consists in so "constructing and arranging a movable slide l" f operating awbolt` withihl` anycase* or boX that t theuboltrnay beeasilyreversed so as to form either a right or left handdoek at pleasure; and further the arrangement is suchthat no pressure on the point of the bolt in the direci tionof the arrow (Fig. 1)` can move said i i "boltwhen fullyfejected and push it into the bcase. In order to accomplish this I confl h struct a bolt of the formfshownin Fig. 4l and a "slide shown `in plan and` cross section in Figs. f3 "and3. The "boltlies on the slide asseen at B Figs.` 5; Gand 7 When in the position shownin Figs. 6 `and 7 it will form i a leftfhand lockg" but when in the position "shown in Fig. 5 orsimply reversed it will form a right hand "lock,V Corresponding jslotsare of course out inthe case to adapt F1gure 1 is of theflockl as attached to a sashstile:` Fig. 2 `is a plan of the case orboX of.thelocfk.` Figs. 3 and whatever.

UNITED'sTATEs PATENT oFFroE- -f Specification of Letters PatentNo. 12,710, dated April 17, 1855.

is produced by the motion of the slide through the circular wedge W on said slide `any force applied to the bolt will, under In the y `arrangement described and shown however `when the slides falls down so that the center some circumstances ailect the slide.

ofthecurve which forms the wedge is nearly on or below the point of the bolt any pressure endwise on the bolt will merely press the slide against the opposite Vside of the vcase `but `can produce no vertical motion This is clearly seen from an inspection of Fig. 7 `As the slide is raised `however the direction of pressure on the wedge becomes more and more nearly` Vern4 tical until when the slide reaches the top of its travel the direction of pressure on it is such that it yields to any pressure on the bolt. And thus while all risk of accident from the sash falling on account of worn stops or ill-fitted casings is avoided, there is no danger of tearing'or injuring the casingwhile the sash is in motion. The latter feature is very easily understood from an inspection of Fig. 6. l

Having thus fully described my invention what I claim as new and desire to secureby Letters Patent is- The mode, substantially as herein set forth, of constructing and arranging a slide, bolt and case so as at pleasure to form either a right or left hand lock-the security also of said lock being attained by means substantially as described.

` f WM. E. ARNOLD. [11. s.l

Signed in presence of- JOHN PHIN, H. G. ARNOLD. 

